Advertisements
Advertisements
प्रश्न
Answer in brief.
Why should a Carnot cycle have two isothermal two adiabatic processes?
Advertisements
उत्तर
There are basically two processes:
- Exchange of heat (steps A to B and C to D). For this to be reversible, the heat exchange must be isothermal. This is possible if the working substance is at the temperature TH of the source while absorbing heat. The working substance should be at the temperature of the cold reservoir TC while rejecting the heat.
- Work done (steps B to C and D to A). For work done to be reversible, the process should be adiabatic.
Thus, the cycle includes two isothermal and two adiabatic processes for maximum efficiency.
Carnot cycle
APPEARS IN
संबंधित प्रश्न
Explain why The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.
A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in Figure
Its volume is then reduced to the original value from E to F by an isobaric process. Calculate the total work done by the gas from D to E to F
For work done to be reversible, the process should be ______
Heating a gas in a constant volume container is an example of which process?
What is a thermodynamic process?
State the assumptions made for thermodynamic processes.
Differentiate between the reversible and irreversible processes.
Explain the cyclic process.
Explain work done during a thermodynamic process.
Explain the thermodynamics of the isochoric process.
When a cycle tyre suddenly bursts, the air inside the tyre expands. This process is ____________.
When you exercise in the morning, by considering your body as a thermodynamic system, which of the following is true?
Give the equation of state for an isothermal process.
Give an expression for work done in an isothermal process.
Apply first law for an adiabatic process.
What is a cyclic process?
Derive the work done in an adiabatic process.
Explain the isobaric process and derive the work done in this process.
Consider the following cyclic process consist of isotherm, isochoric and isobar which is given in the figure.
Draw the same cyclic process qualitatively in the V-T diagram where T is taken along the x-direction and V is taken along the y-direction. Analyze the nature of heat exchange in each process.
An ideal gas is taken in a cyclic process as shown in the figure. Calculate
- work done by the gas
- work done on the gas
- Net work done in the process
For a given ideal gas 6 × 105 J heat energy is supplied and the volume of gas is increased from 4 m3 to 6 m3 at atmospheric pressure. Calculate
- the work done by the gas
- change in internal energy of the gas
- graph this process in PV and TV diagram
Among the amount of heat absorbed and the amount of work done by a system, ______
In which of the following processes, beat is neither absorbed nor released by a system?
For an isothermal expansion of a perfect gas, the value of `(Delta "P")/"P"` is equal to ____________.
The work done on the system in changing the state of a gas adiabatically from equilibrium state A to equilibrium state B is 22.4 J. If the gas is taken from state A to B through another process in which the net heat absorbed by the system is 15.5 cal, then the net work done by the system in the latter case is ______.
( l cal = 4.2 J)
Explain the thermodynamic process.
When an inflated ballon is suddenly burst, why is the emerging air slightly cooled?
